<%@ page contentType="text/html;charset=UTF-8"%>
<%@ page import="com.opensymphony.xwork2.ActionContext" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
{
"success":false,
"errorType":"unexcepted",
"errorMsg":"<s:property value="@org.apache.commons.lang.StringEscapeUtils@escapeJavaScript(exception.message)" escape="false"/>",
"errorStack": "<s:property value="@org.apache.commons.lang.StringEscapeUtils@escapeJavaScript(exceptionStack)" escape="false"/>"
}

<% System.err.println(ActionContext.getContext().getValueStack().findValue("exceptionStack")); %>